Commissariat a L'energie Atomique

Jean Crescini

Denis Duret

Jean-Michel Leger

Christophe Guttin

Slaved radio frequency field and light polarization magnetometer. The polarization direction (P) is slaved perpendicular to the field (Bo) to be measured, as well as the radio frequency field (Brf). Application to the measurement of weak magnetic fields such as the geomagnetic field.

Slaved radio frequency field and light polarization magnetometer

An improved shielded magnetometer including a resonant probe containing a magnetically resonating material held in a resonator. The magnetometer has a spherical electromagnetic shield which exhibits improvements in the sensitivity characteristics by removing the effects of interference fields when the magnetometer is rotated about its axis.

Shielded magnetometer

Continuous vectorial magnetometer having a magnetostrictive pickup including a capacitive pickup which contains a capacitor at least one of whose electrodes is constituted of a material having magnetostrictive properties, and means for measuring the variation of the capacity of the said capacitive pickup under the action of an external magnetic field. The invention also relates to a gradiometer entailing the application of two capacitive pickups of the kind used in a magnetometer. The magnetometer is applied to the measurement of continuous or slowly varying magnetic fields, and the gradiometer to the measurement of a magnetic field gradient.

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Domene, France

Jean Crescini